| 摘要 |
The invention relates to a lamp 1 for road signalling making it possible to obtain a variable brightness of the lights 3, 4, 5 in correspondence with the ambient lighting, by virtue of at least one photoelectric cell 2, so as to allow better perception of the said lamp by the motorist or the like. This lamp also includes a backup bulb 13 for the red light 3, associated with a locating bulb 16 situated on the top part of the lamp thus ensuring rapid locating of the faulty lamp by one or more maintenance technicians. The invention applies to road signalling especially for motor vehicles. <IMAGE>
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